Spring-mounting for vehicles



E. GOLDBERGER.

SPRING MOUNTING FOR VEHICLES.

APPLICATION FILED lUL Y13, 1917.

1,3251 96, Patented Dec. 16, 1919.

2 SHEETSSHEET I.

W $13M 'W' 1-1. GOLDBERGER.

SPRING. MOUNTING FOR VEHICLES.

APPLICATION HLEUJUL'Y 13, 191?.

Patented Dec. 16,1919.

2 SHEYETSSHEET 2.

Emit cxoldbe rfgc'r' UNITED STAE 1 FFIG.

nnnns'r GOLDBERGER, or nnrrnorr, MICHIGAN. I Y

SPRING-MOI INTING FOR VEHICLES.

Specification of Letters men. Patented; Dec. 16, 1919.

Application filed July 13, 1917. Serial No. 180,319.

To all whom it may concern Be it known that I, ERNEST Gonnnnnenu, a'citlzen of Austria-Hungary, residin specification.

This invention relates tothd'tractors :of the track-laying type. The invention relates primarily to a suspension of the truck rollers Upon a subfra'me which can have a relative up and down movement with respect to the chassis. and also a swinging movement around a pivot and in'a vertical plane rela tive to the chassis but which is guided in its vertical. plane and. therefore positively re strained from lateral movement.

In the drawings:. Figure 1 is a plan .view of thedriving, gear at one side of thetractor.

Fig. 2- -is a side elevation of-the driving gear at one side with some of the parts broken'away.

Fig. 3 is a cross section of the same. Fig. 4 is a perspective of one of the links used in the driving chain.

a indicates the chassis of the tractor which is provided with the channel bars a a,' two in connection with each track. By referring to Fig. 3, it .will be seen: that a yoke brests at its ends upon the bars a a, and is provided with perforated lugs o 0 into Which vertical pins are ri. idly fitted. The springsaddlc (l is provide( with four perforated lugs ethat are slidahle vertically on the pins and afford lower seats for the'two coil springs that i serve as yielding spacers between the yoke 71 and the saddle (l.

Now referring to Fig. 2; it will be seen that the saddle (l is mounted at the bottom to rock on the rock shaft h which 1s supported in the lugs 2' upon the suhframe on whose lower side are journaled the truckrollers 7 provided each wlth two flanges'm (Fig. 3) and two treads n which run on the two tracks 0 0 of the links y (see Fig. 4). The pin and sleeve sliding arrangement 0, (a and between subfram e'and chassis, and the lugs '11 when the subframe oscillates upon the rock shaft h preclude either lateral move:

at Detroit, county of lVayne,' State, of Michiment or twisting which would be objectionable.

Turning to Figs. 1 and 2 it will be seen that I have also provided anarrangement for relative movement between the forward idler sprocket a and the subframe. idler sprocket is rotatably supported by the The journal q and this journal is slidably mounted on the. rods "1 .1" supported on top of the subframe by the brackets s. A thrust yoke 25 carries the ends of the journal and is attached to the thrust rod u which plays through the bearings 'v v on the subframe. I The spring w engages around this thrust rod between the rear bearing 1; and the adj-11sting nut p. Hence by changing the position of this adjusting nut 29 upon the thrust rod u the tensionv of the spring can be regulated so as to automatically maintain a constant and even tension in the track chain whether the irregularities over which the tractor has wheel and chassis. It also greatly relieves the track chain from excessive strain.

My invention is not only applicable to tractorsof the track-laying variety but is also broadly applicable for suspending a chassis for up and down and swinging movement upon a single wheel.

\Vhat I claim is:

1. In a tractor of the track-laying type, the combination of a sprocket wheel, an idler sprockpt wheel, a track chain running over the two sprocket wheels, truck rollers runnin; on the tracks of said chain, a subframe supported on the rollers, asuspcnsion device rockingly supported on the .subframe, a chassishaving a vorticalsliding and guiding movement with respect to the suspension device, and springs interposed betweenthe sussis, and a suspension device between the chassis and the truck frame, said suspension avoid con'nnunicating thereto the sprocket device comprising a journal rockingly supported on the "truck frame, one or more spring seats, upi ight. pins, lugs on said suspension device slidable on the pins to give a 5 sliding vertical movement, said subframe being unconnected with the chassis \except through said suspension device. 3. In a vehicle, the combination of a wheel, a chassis and a suspension device adapted to allow vertical relative swinging movement of the wheel andcliassis in a longitudinal plane of the vehicle, one or more springs interposed between the suspension device and the chassis, said \vheel being unconnected with the chassis except through said suspension device.

4. In a tractor of the track-laying type and in driving gear thereof, the combination of a driving sprocket, an idler sprocket, a

track chain running over the sprockets, truck rollers, a journal for the idler sprocket, a yoke holding the idler journal and having said subframe and restrained from any other motion, and elastic spacing means between this yoke and the subframe to pick up lost motion in the track chain.

5. In a vehicle, the combination of a wheel, a chassis, and a device connecting the wheel to the chassis which comprises two parts; one, supported to rock in a vertical longitudinal plane with respect to the chassis, and'the second part connected with the chassis and having a sliding vertical movement with respect to the first mentioned part, one or more springs interposed between the suspension device and thechassis, said wheel being unconnected with said chassis except through said suspension device.

In testimony whereof I sign this specification.

ERNEST GOLDBERGER. 

